Ead oehlmann



(No Model.) 2Sheets-Sheet1.

E. H. U. OEHLMANN.

VENTILATING APPARATUS,

No. 267,102. F Patented Nov. 7, 1882..

wmm I wk Mum.

2 Sheets-Sheet 2.

E. Q 0. OEHLMANN. VENTILATING APPARATUS.

(No Model.)

Patented Nov. 7. 1882.

Fig.3.

UNITED STATES PATENT OFFICE.

EMIL H. G. OEHLMANN, OF BERLIN, GERMANY.

VENTI LATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 267,102, dated November 7, 1882.. Application filed March 27, 1882. (No model.) Patented in Germany March 26, 1880, No.12,5-20.

To all whom it may concern Be it known that I, EMIL HEINRICH GON- RAD OEHLMANN, of thecity of Berlin, Prussia, Empire of Germany,have invented certain new and useful Improvements in Ventilating Apparatus, of which the following is a specification.

This invention relates to an improved ventilating apparatus by which the air in its passage through the apparatus is not only moistened, but also at the same time charged with disinfecting substances, so as to purify the air in sick-rooms, hospitals, and the like. The apparatus may also be worked as a suction apparatus for removing the .bad air whenever required.

The invention consists of a ventilating apparatus constructed of an exterior casing and of an interior actuating water-wheel or turbine inclosed by a casing having a bottom with a hopper-shaped center portion and an annular gutter, said casing being provided with water supply and discharge pipes. Below the bot tom of the water-wheel casing is arranged a water-spray apparatus of peculiar construction, and below the water-spray apparatus a ventilating-fan, which are both applied to the water-wheel shaft and receive rotary motion from the same. Between the bottom ofthe water-wheel casing and the water-spray apparatus is arranged an apparatus for charging the air drawn in by the ventilating-fan with disinfectants. From the water-spray apparatus the water is conducted along a funnelshaped conductor of parabolic shape to an annular collecting-gutter below the fan, and then to the discharge-pipe.

In the accompanying drawings, Figure 1 represents a vertical central section of my improved ventilating apparatus, taken on line .00 as, Fig. 3. Fig. 2 is also a vertical central section of the same on line 3 y, Fig. 4, showing it in connection with a disinfecting apparatus. Fig. 3 represents partly a plan view of the ventilating apparatus and partly a horizontal section on line ab, Fig. 1; and Fig. 4 is a horizontal section of the ventilating apparatus on line 0 d, Fig. 2, one half of the figure showing a top view of the water-spray apparatus, while the other half shows a top view of the disinfecting apparatus.

Similar letters of reference indicate corresponding parts.

The ventilating apparatus shown in Fig. 1 consists of an exterior casing, A, within which is arranged in step and top bearings g g? a vertical center shaft, 9, that carries at its upper end a water-wheel or turbine,f, and near its lower end a ventilating-fan, i. The waterwheelf is inclosed by a casing, 0, the bottom of which hasa central funnel-shaped portion, 0, and an annular gutter, 0", by which the water is collected so as to be either conducted off through the pipe m to the discharge-pipe r, or, by closing the stopcock n of pipe m, made to pass over the center funnel, 0, to a water-spray apparatus, B.

The water-spray apparatus B consists of a hollow sheet-metal cylinder, 25, the lower part of which forms the center portion of the fan 'i, and of a number of conicallywlishing trays, s s, which are secured to the upper part of the cylinder t, above the ventilating-fan i. The cylinder t'is closed below the trays by a solid b0ttom,.8, and provided with perforations u for the passage of the water to the trays near the point of connection of each tray with the cylinder t.

At the inside of the upper part of the cylinder t is arrangedaconical deflector, T, of sheet metal, the upper end of which is extended into the funnel-shaped center portion, 0, of the water-wheel casing 0, while the lower edge is serrated, the points of the serrations forming contact with theinterior surface of the cylinder t. fiector T the water passes in a perfectlynoiseless manner into the cylinder at, and is then distributed through the perforations in the upper part of the cylinder t to the trays s, which throw the water by the centrifugal force in finely-divided sprays in upwardly-inclined direction.

The bottom 8 is arranged near the lowest tray 8 for the purpose of preventing too great an accumulation of water inside of the cylinder 1?, which would otherwise exert too great a Weight upon the shaft g. The water which imparts motion to the water-wheelf is conducted by a pipe, k, and nozzle w into the easing 0, the pressure of the water imparting lllO- tion to the water-wheel and to all the parts By means of this sheet-metal de-- connected to its shaft, which water is conducted off through the pipe m, if the airis not to be moistened and cooled by the water-spray apparatus. By closing the stop-cock n the water is compelled to pass over the rim of the funnel-shaped center portion, 0, of the casing 0, in which case it serves, after it has passed through the spray apparatus B, for the purifying, moistening, and cooling of the air. In this case the water is conducted by a funnel, 1), having aparabolic surface, into an annular gutter, q, arranged below the ventilating-fan, and thence to the discharge-pipe r.

The water-wheel f is entirely inclosed by its casing 0, so that no water can escape therefrom, the central opening in the cover wbeing made only large enough that the oil-cap which lubrioates the top bearing of the shaft 9 can freely rotate therewith.

The funnel-shaped center portion, 0, is so formed that only a small annular space is arranged around the shaft 9, so that all the water which is used for driving the waterwheel is collected and conducted over the conical deflector T to the spray apparatus B, and thence through the funnel 1), gutter q, and dischargepipe 0' to the outside.

The disinfecting apparatus D is clearly shown in Figs. 2 and at, and is preferably arranged directly above the spray apparatus B. It is, like the spray apparatus, secured to the extended upper part of the cylinder t, and consequently rotated with the shaft 9. The disinfecting apparatus D consists of a tray of wire-gauze, which is arranged with a suitable number of concentric \l-shaped pockets, 8, that are supported at their lower ends by radial iron straps u.

In Figs. 2 and 4 of the drawings the pockets s are'shown as filled with sponge or other moisture-absorbing material. To the sponge filling of the innermost pocket, 8, is supplied the disinfecting-liquid in small quantities by a drip-pipe, '0. As soon as the absorptive material in the inner pocket, 8, is entirely charged the liquid is thrown by centrifugal power through the openings in the wire-gauze in a horizontal direction to and taken up by the absorptive material in the outer concentric pockets, and thence distributed in a minutely-divided spray or vapor in the spaceat the inside of the ventilating apparatus. The air which is forced through the apparatus by the fan is thereby charged with the finely-divided disinfectant and carried along to the rooms where such air is required.

The ventilating apparatus acts as an airforcing' apparatus when the water-wheel and fan are rotated from theleft to the right, wherebytheairis drawnin from below,forced through the water-spray and disinfecting-vapor, and thence to the rooms to be supplied. The ventilating apparatus may, however, be changed from an air-forcing apparatus to a suction apparatus by arranging a second water-supply nozzle, 20, as shown in Fig. 3, which supplies the water to the other side of the water-wheel,

so as to turn the same in the opposite direc tion to the former. The water is admitted to either nozzle to or w! by a two-way cock, and thereby the water-wheel turned in one or the opposite direction. By the reverse motion of the fan the air is drawn out of the rooms by suction, whereby the utility of the apparatus is increased, as it is possible towork it as an air-forcing or suction apparatus. In one case the air is purified, moistened, and cooled, and also charged with disinfecting materials, if required, while in the other case the bad air can be quickly removed from the rooms to be ventilated.

Therelative positions of the water-spray and disinfecting apparatus can be changed, if desired.

The parabolic shape is given to the discharge-funnel p for the reason that the air is deflected thereby at the lower part of the funnel, so as to pass off freely and without being impeded by the gutter q in case the apparatus is worked for suction.

The ventilating apparatus may be built with the disinfecting apparatus and without the Water-spray apparatus, or with a water-spray apparatus, dispensing with the disinfecting apparatus, or with both combined, as deemed most expedient for the special application of the apparatus.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A ventilating apparatus consisting of an exterior casing, of a water-wheel and waterwheel-casing, of a water-spray apparatus below the water-wheelcasing, and ofa ventilating-fan below the water-spray apparatus, both the water-spray apparatus and fan being revolved by the water-wheel, substantially as set forth.

2. In aventilating apparatus, a water-spray apparatus consisting of a number of dishing trays secured to a fixed perforated cylinder, which is closed at the bottom, and provided with an interior deflector having a lower serrated edge, substantially as set forth.

3. The combination of an exterior casing, a water-wheel, a water wheel casing having a funnel-shaped bottom, a water-spray apparatus, a ventilating-fan, a. conducting-funnel ot' parabolic shape around the fan, and a watercollecting gutter below the funnel, substantially as set forth.

4. In a ventilating apparatus, the combination of a main casing, a water-wheel inclosed by an interior casing, a disinfecting apparatus below the water-wheel, and a ventilating-fan, the ventilating-fan and disinfecting apparatus being secured to the water-wheel shaft and revolved therewith, substantially'as set forth.

5. In a ventilating apparatus, the combination, with the water-wheel shaft, of a disinfecting apparatus composed of radial supportingarms and of a wire-gauze tray having concentric pockets for the absorptive material, substantially as described.

6. In a ventilating apparatus, a water-wheel IIO and its inclosing casing, the latter arranged In testimony that I claim the foregoing as with a bottom having a funnel-shaped center my invention I have signed my name in the portion and an annular encircling gutter, in presence ot'two subscribing witnesses. combination with a Water-spray apparatus be- 5 low the casing, a water-supply pipe, a water- EMIL HEINRICH CONRAD OEHLMANN.

discharge pipe connected to the bottom of the gutter, and a Water-discharge pipe for the] Witnesses: water-spray apparatus, so that the water can HUGO WILOP, be conducted off directly or supplied to the OSCAR SLATER.

IO spray apparatus, substantially as described. 

